This question is too open ended. To try to answer this question definitively here would only get someone in trouble. There are many different voltages, high legs, etc. Need more specific information to answer.
No, it is not safe to plug a 120v 20 amp welder into a 240v 40 amp outlet. The voltage difference is too high and could damage the welder. It is important to match the voltage and amperage of the welder with the corresponding outlet.
Is the 220V plug 220V only or 110/220V? (The former will have 3 prongs and the former will have 4) If your case is the latter just use the ground, neutral, and one of the hots. This will give you 120V single phase. If the case is the former you can't get 110V off that plug.
No, a 240V 22A welder requires a 240V outlet for proper operation. Plugging it into a 120V outlet will not provide enough power and could damage the welder or create a safety hazard. It is important to always use the correct voltage and amperage for electrical appliances.
Yes, you can plug a device rated for 117V into a 120V outlet. The slight difference in voltage is generally acceptable since most devices are designed to handle a range of voltages. However, always check the manufacturer's specifications to ensure safe operation. If the device has specific voltage requirements, using a voltage converter may be advisable.
No, in North America the plug configuration will not allow that to happen. The blade configuration for 120 volts are in parallel where as the 220 volt configuration are in tandem.
You will burn up your appliance!!!!!
"As far as charging the Toyota Camry Hybrid, you can plug it into any one of the standard 120V plugs.So as long as it can surge a 120V plug, then it can be used."
All my experience with rotary phase converters have been in converting 240 volt single phase into 240 volt three phase. They all were hard wired into their respective systems, so my answer is no.
no.
Don't!
No, it is not safe to plug a 120v 20 amp welder into a 240v 40 amp outlet. The voltage difference is too high and could damage the welder. It is important to match the voltage and amperage of the welder with the corresponding outlet.
Assuming the wiring to the outlet has 2 loads and one neutral, isolate one load from the outlet and use the neutral as the common. be sure to ground from the receptacle to your conduit or ground lead. You should also replace the corresponding breaker with a 120 volt single breaker.
Is the 220V plug 220V only or 110/220V? (The former will have 3 prongs and the former will have 4) If your case is the latter just use the ground, neutral, and one of the hots. This will give you 120V single phase. If the case is the former you can't get 110V off that plug.
Without a proper converter, no you can not. The consequences would be damage to the equipment, wireing, fire, and possible injury or death. Don't do it. Have a single phase outlet installed.
Off hand no but your explanations are not clear as to who is doing what to whom,,
No, that is a good use for for that plug.
No, a 240V 22A welder requires a 240V outlet for proper operation. Plugging it into a 120V outlet will not provide enough power and could damage the welder or create a safety hazard. It is important to always use the correct voltage and amperage for electrical appliances.